Fr 2308 $10 1934 North Africa note - Is it really a Mule?

synchr

I see bp 784 but not listed as Mule on the holder

https://auctions.stacksbowers.com/lots/view/3-18ITZ1/fr-2308-1934-10-north-africa-emergency-note-pmg-very-fine-30

manofwar1

To my understanding of all of the literature, it is a "Mule".
Schwartz and Linquist page 164, under the N A 1934: Face Plate #126, Back Plates 585 or higher = Mule

manofwar1

Also I only have the 7th edition